Sleeping with eyes open is a condition known as nocturnal lagophthalmos. Incomplete eyelid closure: Some individuals may have difficulty fully closing their eyelids due to muscle or nerve problems.

Laura holds a Master's in Experimental Neuroscience and a Bachelor's in Biology from Imperial College London. Her areas of expertise include health, medicine, psychology, and neuroscience.View full ...

Have you heard the saying about “sleeping with one eye open”? It’s a bit of metaphoric advice about staying vigilant—and a way to describe very light restless sleep. But sleeping with eyes open is ...

Sign up for CNN’s Sleep, But Better newsletter series. Our seven-part guide has helpful hints to achieve better sleep. Baland Jalal lay in bed terrified ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images Have you ever woken up after sleeping, unable to move? Maybe you can see ...

(CNN) — Sign up for CNN’s Sleep, But Better newsletter series. Our seven-part guide has helpful hints to achieve better sleep. Baland Jalal lay in bed terrified, experiencing his own real-life horror ...